The pyramid system for multiscale raster analysis
L. De Cola, N. Montagne
1993, Computers & Geosciences (19) 1393-1404
Geographical research requires the management and analysis of spatial data at multiple scales. As part of the U.S. Geological Survey's global change research program a software system has been developed that reads raster data (such as an image or digital elevation model) and produces a pyramid of aggregated lattices as...
Culvert analysis program for indirect measurement of discharge
Janice M. Fulford
Shen Hsieh WenSu S.T.Wen Feng, editor(s)
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
A program based on the U.S. Geological Survey (USGS) methods for indirectly computing peak discharges through culverts allows users to employ input data formats used by the water surface profile program (WSPRO). The program can be used to compute discharge rating surfaces or curves that describe the behavior of flow...
The erosion of carbonate stone by acid rain: Laboratory and field investigations
P. A. Baedecker, M.M. Reddy
1993, Journal of Chemical Education (70) 104-108
One of the goals of research on the effects of acidic deposition on carbonate stone surfaces is to define the incremental impact of acidic deposition relative to natural weathering processes on the rate of carbonate stone erosion. If rain that impacts carbonate stone surfaces is resident on the surface long...
Cytonuclear genetic architecture in mosquitofish populations and the possible roles of introgressive hybridization
Kim T. Scribner, John C. Avise
1993, Molecular Ecology (2) 139-149
Spatial genetic structure in populations of mosquitofish (Gambusia) sampled throughout the south-eastern United States was characterized using mitochondrial (mt) DNA and allozyme markers. Both sets of data revealed a pronounced genetic discontinuity (along a broad path extending from south-eastern Mississippi to north-eastern Georgia) that corresponds to a recently recognized distinction...
Evaluation of subsurface exploration, sampling, and water-quality-analysis methods at an abandoned wood-preserving plant site at Jackson, Tennessee
W. S. Parks, J. K. Carmichael, J. E. Mirecki
1993, Water-Resources Investigations Report 93-4108
Direct Push Technology (DPT) and a modified-auger method of sampling were used at an abandoned wood-preserving plant site at Jackson, Tennessee, to collect lithologic data and ground-water samples in an area known to be affected by a subsurface creosote plume. The groundwater samples were analyzed using (1) gas chromatography with...
The use of a vegetation index for assessment of the urban heat island effect
K. P. Gallo, A. L. McNab, Thomas R. Karl, Jesslyn F. Brown, J. J. Hood, J.D. Tarpley
1993, International Journal of Remote Sensing (14) 2223-2230
A vegetation index and radiative surface temperature were derived from NOAA-11 Advanced Very High Resolution Radiometer (AVHRR) data for the Seattle, WA region from 28 June through 4 July 1991. The vegetation index and surface temperature values were computed for locations of weather observation stations within the region and compared...
The susceptibility of rock slopes to earthquake-induced failure
D. K. Keefer
1993, Bulletin of the Association of Engineering Geologists (30) 353-361
Faulure of rock slopes is a major cause of damage and casualties during moderate and strong earthquakes. This article presents a method for assessing the seismic stability of rock slopes, which can be applied on a regional scale, using data from existing maps, reports, aerial photographs, and reconnaissance-level field observations....
Response of a 42-storey steel-frame building to the Ms = 7.1 Loma Prieta earthquake
E. Safak
1993, Engineering Structures (15) 403-421
A set of 14 acceleration records was obtained from a 42-storey steel-frame building, the Chevron Building, in San Francisco during the Ms= 7.1">Ms= 7.1 Loma Prieta earthquake of 17 October 1989. Data were analysed using a system identification method based on the discretetime linear filtering, and...
Relation of local scour to hydraulic properties at selected bridges in New York
Gerard K. Butch
Shen Hsieh WenSu S.T.Wen Feng, editor(s)
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
Hydraulic properties, bridge geometry, and basin characteristics at 31 bridges in New York are being investigated to identify factors that affect local scour. Streambed elevations measured by the U.S. Geological Survey and New York State Department of Transportation are used to estimate local-scour depth. Data that show zero or minor...
Using a GIS to link digital spatial data and the precipitation-runoff modeling system, Gunnison River Basin, Colorado
William A. Battaglin, Gerhard Kuhn, Randolph S. Parker
1993, Conference Paper, Proceedings of the Second international conference/workshop on Integrating geographic information systems and environmental modeling
The U.S. Geological Survey Precipitation-Runoff Modeling System, a modular, distributed-parameter, watershed-modeling system, is being applied to 20 smaller watersheds within the Gunnison River basin. The model is used to derive a daily water balance for subareas in a watershed, ultimately...
Use of geophysical data to assess scour development
Gary Placzek, Peter F. Haeni, Roy Trent
Shen Hsieh WenSu S.T.Wen Feng, editor(s)
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
The development of scour holes in the Connecticut River near the new Baldwin Bridge has been documented by comparing geophysical records collected before (1989), during (1990), and after (1992) bridge construction. Eight piers that support the 570-m (meter) span over the Connecticut River were protected by 12-m wide cofferdams during...
Distribution and abundance of Marbled Murrelets in Alaska
John F. Piatt, R. Glenn Ford
1993, The Condor (95) 662-669
Most seabirds breed in colonies on offshore islands, but throughout most of their range from California to Alaska Marbled Murrelets (Brachyramphus marmoratus) fly inland to nest on trees in old-growth coniferous forests. Some fraction of the murrelet population nests on the ground in Alaska. The relative distribution and abundance of...
Efficient method for assessing channel instability near bridges
Bret A. Robinson, R.E. Thompson Jr.
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
Efficient methods for data collection and processing are required to complete channel-instability assessments at 5,600 bridge sites in Indiana at an affordable cost and within a reasonable time frame while maintaining the quality of the assessments. To provide this needed efficiency and quality control, a data-collection form was developed that...
Assimilation efficiency for sediment-sorbed benzo(a)pyrene by Diporeia spp.
M.J. Lydy, P.F. Landrum
1993, Aquatic Toxicology (26) 209-224
Two methods are currently available for determining contaminant assimilation efficiencies (AE) from ingested material in benthic invertebrates. These methods were compared using the Great Lakes amphipod Diporeia spp. and [14C]benzo(a)pyrene (BaP) sorbed to Florissant sediment (< 63 µm). The first approach, the direct measurement method, uses total organic carbon as...
Continuum-mechanics-based rheological formulation for debris flow
Cheng-lung Chen, Chi-Hai Ling
Shen Hsieh WenSu S.T.Wen Feng, editor(s)
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
This paper aims to assess the validity of the generalized viscoplastic fluid (GVF) model in the light of both the classical relative-viscosity versus concentration relation and the dimensionless stress versus shear-rate squared relations based on kinetic theory, thereby addressing how to evaluate the rheological parameters of the GVF model using...
Summary of the mineral- and energy-resource endowment, BLM roswell resource area, east-central New Mexico
S. Bartsch-Winkler, D. M. Sutphin, M. M. Ball, S.L. Korzeb, R. F. Kness, J.T. Dutchover
1993, Nonrenewable Resources (2) 262-283
In this summary of two comprehensive resource reports produced by the U.S. Bureau of Mines and the U.S. Geological Survey for the U.S. Bureau of Land Management, we discuss the mineral- and energyresource endowment of the 14-millon-acre Roswell Resource Area, New Mexico, managed by the Bureau of Land Management. The...
Measurement of bridge scour at the SR-32 crossing of the Sacramento River at Hamilton City, California, 1987-92
J. C. Blodgett, Carroll D. Harris
Shen Hsieh WenSu S.T.Wen Feng, editor(s)
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
A study of the State Route 32 crossing of the Sacramento River near Hamilton City, California, is being made to determine those channel and bridge factors that contribute to scour at the site. Three types of scour data have been measured-channel bed (natural) scour, constriction (general) scour, and local (bridge-pier...
Numerical model for learning concepts of streamflow simulation
L. L. DeLong
Shen Hsieh WenSu S.T.Wen Feng, editor(s)
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
Numerical models are useful for demonstrating principles of open-channel flow. Such models can allow experimentation with cause-and-effect relations, testing concepts of physics and numerical techniques. Four PT is a numerical model written primarily as a teaching supplement for a course in one-dimensional stream-flow modeling. Four PT options particularly useful in...
1:100,000-scale Counties of the United States
U.S. Dept of Commerce Bureau of Census
1993, Report
This is a coverage of the county boundaries of the conterminous United States (AK, HI and Puerto Rico are available separately). The lines were extracted from U.S. Census TIGER/line files using an AML program (see 4.), written by Doug Nebert and Mark Negri, running on two Data General 6220 servers....
Bacterial degradation of acetone in an outdoor model stream
R. E. Rathbun, D. W. Stephens, D. Y. Tai
1993, Environmental Pollution (79) 153-162
Diurnal variations of the acetone concentration in an outdoor model stream were measured with and without a nitrate supplement to determine if the nitrate supplement would stimulate bacterial degradation of the acetone. Acetone loss coefficients were computed from the diurnal data using a fitting procedure based on a Lagrangian particle...
Estimation of undiscovered deposits in quantitative mineral resource assessments-examples from Venezuela and Puerto Rico
D. P. Cox
1993, Nonrenewable Resources (2) 82-91
Quantitative mineral resource assessments used by the United States Geological Survey are based on deposit models. These assessments consist of three parts: (1) selecting appropriate deposit models and delineating on maps areas permissive for each type of deposit; (2) constructing a grade-tonnage model for each deposit model; and (3) estimating...
Possible connection between two Alaskan catastrophes occurring 25 yr apart (1964 and 1989)
K.A. Kvenvolden, P.R. Carlson, C. N. Threlkeld, A. Warden
1993, Geology (21) 813-816
On March 24, 1989, the Exxon Valdez supertanker grounded on Bligh Reef, spilling North Slope crude oil into Prince William Sound, Alaska. Tracking the geochemical fate of this spilled oil has revealed, in addition to weathered products from the spill, minor oil residues on beaches...
Geological and technological assessment of artificial reef sites, Louisiana outer continental shelf
D.L. Pope, T.F. Moslow, J.B. Wagner
1993, Ocean and Coastal Management (20) 121-145
This paper describes the general procedures used to select sites for obsolete oil and gas platforms as artificial reefs on the Louisiana outer continental shelf (OCS). The methods employed incorporate six basic steps designed to resolve multiple-use conflicts that might otherwise arise with daily industry and commercial fishery operations, and...
Relation of channel stability to scour at highway bridges over waterways in Maryland
Edward J. Doheny
Shen Hsieh WenSu S.T.Wen Feng, editor(s)
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
Data from assessments of channel stability and observed-scour conditions at 876 highway bridges over Maryland waterways were entered into a database. Relations were found to exist among specific, deterministic variables and observed-scour and debris conditions. Relations were investigated between (1) high-flow angle of attack and pier- and abutment-footing exposure, (2)abutment...
Channel geometry data of streams in the lower Drift River basin affected by the 1989-90 eruptions of Redoubt Volcano, Alaska
J.M. Dorava, B.A. May, D. F. Meyer, L.V. Myers
1993, Open-File Report 93-94
No abstract available....
